Konstantin Keidel, an acquaintance of GermanWings co-pilot Andreas Lubitz, told People that Lubitz was "a normal guy" and that people in his hometown are shocked.
It is believed that Lubitz, 28, intentionally crashed the Germanwings plane that killed 150 people.
An official told The New York Times, "We don’t know yet the reason why one of the guys went out. But what is sure is that at the very end of the flight, the other pilot is alone and does not open the door."
French prosecutor Brice Robin told reporters that Lubitz intentionally crashed the plane.
But Keidel said that's not the Lubitz he and his friends knew.
"We played volleyball together, and he would give me insight into his pilot internship because I also want to be a pilot," he told People. "He's being portrayed as evil, but the Andreas we knew wasn't."
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Keidel said that Lubitz's family are nice and kind people, and that the road to their house is currently cut off.